34 
Proceedings of the Eoyal Society of Edinburgh. [Sess. 
a-d-GALACTOSE. 
The powdered galactose was dried in vacuo at 100° till of constant 
weight. It melted at 155-157'" and dissolved in water, forming a colour- 
less solution. 
The cryoscopic determinations in water and in formamide solutions 
gave the following figures : — 
Solvent. 
Concentration per 
100 grams solvent. 
Mol. weight 
found. 
Mol. weight 
calculated. 
Water 
1-01 
171-4 
180 
5 ? 
2-07 
179-5 
Formamide 
0-415 
164-7 
55 
?? 
0-57 
164-4 
?? 
?? 
0-738 
159-6 
?5 
0-77 
159-6 
5 ? 
1-05 
161-3 
?5 
The polarimetric results are tabulated below (c/. figs. 7 and 8). A 
second series of readings in water solution proved to be practically 
concordant with that given. 
